futurefields you really dont like it when people disagree with you, but have you ever thought that maybe they are right?
Think about this - the XBox One and PS4 were designed from the ground up to be gaming consoles, and both of them have unified memory pools. Last generation, the Xbox 360 was the only console to have a unified memory pool, and it was renowned to be easier to program for. This generation, only the Wii U does not have a unified memory pool.
Remember, the guys that designed these consoles are smart. Very smart. They probably have PHds and many years of experience in the field, and the engineers at both Sony and MS went with unified memory. Why do you think that is? If you are right and unified memory is more expensive and slower, then they are idiots, correct? So unless you believe are idiots, you have to concede that there must be something that they know about unified memory that you don't know.
Personally I think the PS4 is the perfect console, hardware wise, this generation. For its cost, I dont think you can really do better.
EDIT: The XBox 1 and 360 both have extra cache memory, but they do have unified memory pools. And a unified memory pool is simpler for programmers because you can configure it to your liking. Want 4GB reserved for graphics memory? Done. Want 3.335676GB reserved for system memory? Done. You can slice the memory up any way you like, and share memory between CPU and GPU easily. How much programming experience do you have?